49 CFR 180.403 - Definitions.

In addition to the definitions contained in §§ 171.8, 178.320(a) and 178.345-1 of this subchapter, the following definitions apply to this subpart:

Corroded or abraded means any visible reduction in the material thickness of the cargo tank wall or valve due to pitting, flaking, gouging, or chemical reaction to the material surface that effects the safety or serviceability of the cargo tank. The term does not include cosmetic or minor surface degradation that does not effect the safety or serviceability of the cargo tank

Corrosive to the tank or valve means that the lading has been shown through experience or test data to reduce the thickness of the material of construction of the tank wall or valve.

Modification means any change to the original design and construction of a cargo tank or a cargo tank motor vehicle that affects its structural integrity or lading retention capability including changes to equipment certified as part of an emergency discharge control system required by § 173.315(n)(2) of this subchapter. Any modification that involves welding on the cargo tank wall must also meet all requirements for “Repair” as defined in this section. Excluded from this category are the following:

(1) A change to motor vehicle equipment such as lights, truck or tractor power train components, steering and brake systems, and suspension parts, and changes to appurtenances, such as fender attachments, lighting brackets, ladder brackets; and

(2) Replacement of components such as valves, vents, and fittings with a component of a similar design and of the same size.

Owner means the person who owns a cargo tank motor vehicle used for the transportation of hazardous materials, or that person's authorized agent.

Rebarrelling means replacing more than 50 percent of the combined shell and head material of a cargo tank.

Repair means any welding on a cargo tank wall done to return a cargo tank or a cargo tank motor vehicle to its original design and construction specification, or to a condition prescribed for a later equivalent specification in effect at the time of the repair. Excluded from this category are the following:

(1) A change to motor vehicle equipment such as lights, truck or tractor power train components, steering and brake systems, and suspension parts, and changes to appurtenances, such as fender attachments, lighting brackets, ladder brackets; and

(2) Replacement of components such as valves, vents, and fittings with a component of a similar design and of the same size.

(3) Replacement of an appurtenance by welding to a mounting pad.

Replacement of a barrel means to replace the existing tank on a motor vehicle chassis with an unused (new) tank. For the definition of tank, see § 178.320, § 178.345, or § 178.338-1 of this subchapter, as applicable.

Stretching means any change in length, width or diameter of the cargo tank, or any change to a cargo tank motor vehicle's undercarriage that may affect the cargo tank's structural integrity.

The Pipeline and Hazardous Materials Safety Administration (PHMSA) proposes to amend the Hazardous Materials Regulations (HMR) to maintain alignment with international regulations and standards by incorporating various amendments, including changes to proper shipping names, hazard classes, packing groups, special provisions, packaging authorizations, air transport quantity limitations, and vessel stowage requirements. These revisions are necessary to harmonize the HMR with recent changes made to the International Maritime Dangerous Goods Code, the International Civil Aviation Organization's Technical Instructions for the Safe Transport of Dangerous Goods by Air, and the United Nations Recommendations on the Transport of Dangerous Goods—Model Regulations. Additionally, PHMSA proposes several amendments to the HMR that would allow for increased alignment with the Transport Canada, Transportation of Dangerous Goods (TDG) Regulations.

Effective date: This rule is effective December 7, 2018. Incorporation by reference date: The incorporation by reference of certain publications listed in this final rule is approved by the Director of the Federal Register as of December 7, 2018. Voluntary compliance date: November 7, 2018. Delayed compliance date: Unless otherwise specified, compliance with the amendments adopted in this final rule is required beginning November 7, 2019.

49 CFR Parts 171, 172, 173, 176, 178, and 180

Summary

In this rulemaking, PHMSA is amending the Hazardous Materials Regulations in response to 19 petitions for rulemaking submitted by the regulated community to update, clarify, streamline, or provide relief from miscellaneous regulatory requirements. By adopting these deregulatory amendments, PHMSA is allowing more efficient and effective ways of transporting hazardous materials in commerce while maintaining an equivalent level of safety.

Effective date: This final rule is effective July 18, 2018. Voluntary compliance date: June 18, 2018. Delayed compliance date: Unless otherwise specified, compliance with the amendments adopted in this final rule is required beginning September 17, 2018.

49 CFR Parts 172, 173, and 180

Summary

PHMSA issues this rulemaking in response to appeals submitted to a previously-published final rule. On June 2, 2016, PHMSA published a final rule that made miscellaneous amendments to the Hazardous Materials Regulations. This final rule specifically responds to appeals to extend the effective date of certain nitric acid packaging and emergency response telephone number amendments as previously adopted. This final rule also clarifies amendments associated with the trigger date of the 10-year test period for certain MC 331 cargo tanks in dedicated propane service and corrects editorial errors.

Interested persons are invited to submit comments on or before May 7, 2018. Comments received after that date will be considered to the extent practicable.

49 CFR Parts 107, 171, 172, 173, 174, 177, 178, 179, and 180

Summary

This request for information notice replaces the version published in the Federal Register on March 22, 2018 (83 FR 12529), to make technical corrections to the prior version. The Pipeline and Hazardous Materials Safety Administration (PHMSA) requests information on matters related to the development and potential use of automated technologies for surface modes ( i.e., highway and rail) in hazardous materials transportation. In anticipation of the development, testing, and integration of Automated Driving Systems in surface transportation, PHMSA is issuing this request for information on the factors the Agency should consider to ensure continued safe transportation of hazardous materials without impeding emerging surface transportation technologies.

Interested persons are invited to submit comments on or before May 7, 2018. Comments received after that date will be considered to the extent practicable.

49 CFR Parts 107, 171, 172, 173, 174, 177, 178, 179, and 180

Summary

The Pipeline and Hazardous Materials Safety Administration (PHMSA) requests information on matters related to the development and potential use of automated technologies for surface modes ( i.e., highway and rail) in hazardous materials transportation. In anticipation of the development, testing, and integration of Automated Driving Systems in surface transportation, PHMSA is issuing this request for information on the factors the Agency should consider to ensure continued safe transportation of hazardous materials without impeding emerging surface transportation technologies.

Effective date: This rule is effective March 30, 2017, except for instruction 22, which is effective January 2, 2019. Voluntary compliance date: January 1, 2017. Delayed compliance date: Unless otherwise specified, compliance with the amendments adopted in this final rule is required beginning January 1, 2018. Incorporation by reference date: The incorporation by reference of certain publications listed in this rule is approved by the Director of the Federal Register as of March 30, 2017.

49 CFR Parts 107, 171, 172, 173, 175, 176, 178, and 180

Summary

PHMSA is issuing a final rule to amend the Hazardous Materials Regulations (HMR) to maintain consistency with international regulations and standards by incorporating various amendments, including changes to proper shipping names, hazard classes, packing groups, special provisions, packaging authorizations, air transport quantity limitations, and vessel stowage requirements. These revisions are necessary to harmonize the HMR with recent changes made to the International Maritime Dangerous Goods Code, the International Civil Aviation Organization's Technical Instructions for the Safe Transport of Dangerous Goods by Air, and the United Nations Recommendations on the Transport of Dangerous Goods—Model Regulations. Additionally, PHMSA is adopting several amendments to the HMR that result from coordination with Canada under the U.S.-Canada Regulatory Cooperation Council.

Comments must be received on or before May 19, 2017. To the extent possible, PHMSA will consider late-filed comments during the next stage of the rulemaking process.

49 CFR Parts 171, 172, 173, 174, 177, 178, 179, and 180

Summary

PHMSA is extending the comment period for an advance notice of proposed rulemaking that was published in the Federal Register on January 18, 2017. In response to stakeholder requests, the comment period will be extended for an additional 60 days, from March 20, 2017 to May 19, 2017.

PHMSA is considering revising the Hazardous Materials Regulations (HMR) to establish vapor pressure limits for unrefined petroleum-based products and potentially all Class 3 flammable liquid hazardous materials that would apply during the transportation of the products or materials by any mode. PHMSA is currently assessing the merits of a petition for rulemaking submitted by the Attorney General of the State of New York regarding vapor pressure standards for the transportation of crude oil. The petition requests that PHMSA implement a Reid Vapor Pressure (RVP) limit less than 9.0 pounds per square inch (psi) for crude oil transported by rail. PHMSA will use the comments in response to this ANPRM to help assess and respond to the petition and to evaluate any other potential regulatory actions related to sampling and testing of crude oil and other Class 3 hazardous materials. PHMSA will also evaluate the potential safety benefits and costs of utilizing vapor pressure thresholds within the hazardous materials classification process for unrefined petroleum-based products and Class 3 hazardous materials.

The Pipeline and Hazardous Materials Safety Administration (PHMSA) proposes to amend the Hazardous Materials Regulations (HMR) to maintain consistency with international regulations and standards by incorporating various amendments, including changes to proper shipping names, hazard classes, packing groups, special provisions, packaging authorizations, air transport quantity limitations, and vessel stowage requirements. These revisions are necessary to harmonize the HMR with recent changes made to the International Maritime Dangerous Goods Code, the International Civil Aviation Organization's Technical Instructions for the Safe Transport of Dangerous Goods by Air, and the United Nations Recommendations on the Transport of Dangerous Goods—Model Regulations. Additionally, PHMSA proposes several amendments to the HMR that result from coordination with Canada under the U.S.-Canada Regulatory Cooperation Council.

Comments must be submitted by September 26, 2016. To the extent possible, PHMSA will consider late-filed comments as a final rule is developed.

49 CFR Parts 107, 171, 172, 173, 178 and 180

Summary

The Pipeline and Hazardous Materials Safety Administration (PHMSA) is proposing to amend the Hazardous Materials Regulations to revise certain requirements applicable to the manufacture, use, and requalification of DOT-specification cylinders. PHMSA is taking this action in response to petitions for rulemaking submitted by stakeholders and to agency review of the compressed gas cylinders regulations. Specifically, PHMSA is proposing to incorporate by reference or update the references to several Compressed Gas Association publications, amend the filling requirements for compressed and liquefied gases, expand the use of salvage cylinders, and revise and clarify the manufacture and requalification requirements for cylinders.

Comments must be submitted by August 29, 2016. To the extent possible, PHMSA will consider late-filed comments as a final rule is developed.

49 CFR Parts 171, 172, 173, 176, 178, and 180

Summary

In response to petitions for rulemaking submitted by the regulated community, PHMSA proposes to amend the Hazardous Materials Regulations (HMR; 49 CFR parts 171 through 180) to update, clarify, or provide relief from miscellaneous regulatory requirements. Specifically, PHMSA is proposing amendments that include, but are not limited to, the following: Incorporating by Reference (IBR) multiple publications from both the Compressed Gas Association (CGA) and the Chlorine Institute; addressing inconsistencies with domestic and international labels and placards; permitting alternative testing for aerosols; no longer mandating that excepted quantities comply with the emergency response telephone requirement; allowing electronic signatures for Environmental Protection Agency (EPA) manifest forms; and no longer requiring the service pressure to be marked on Department of Transportation (DOT) 8 and 8L cylinders.

Effective Date: This rule is effective July 5, 2016. Voluntary Compliance Date: Voluntary compliance with all amendments is authorized June 2, 2016. Incorporation by reference Date: The incorporation by reference of certain publications listed in this rule is approved by the Director of the Federal Register as of July 5, 2016.

49 CFR Parts 107, 171, 172, 173, 175, 176, 177, 178, 179, and 180

Summary

In this final rule, the Pipeline and Hazardous Materials Safety Administration (PHMSA) is amending the Hazardous Materials Regulations (HMR) to make miscellaneous amendments in order to update and clarify certain regulatory requirements. These amendments are designed to promote safer transportation practices, address petitions for rulemaking, respond to National Transportation Safety Board (NTSB) Safety Recommendations, facilitate international commerce, make editorial corrections, and simplify the regulations. The amendments in this rulemaking include, but are not limited to, removing the packing group (PG) II designation for certain organic peroxides, self-reactive substances, and explosives; incorporating requirements for trailers of manifolded acetylene cylinders; providing requirements to allow for shipments of damaged wet electric batteries; and revising the requirements for the packaging of nitric acid, testing of pressure relief devices on cargo tanks, and shipments of black or smokeless powder for small arms.

Submit comments by June 28, 2016. To the extent possible, PHMSA will consider late-filed comments as we determine whether additional rulemaking is necessary.

49 CFR Parts 107, 171, 173, 178, 179 and 180

Summary

This SNPRM proposes to incorporate and allow the use of the 2015 edition of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Section XII—Rules for Construction and Continued Service of Transport Tanks for the construction and continued service of cargo tank motor vehicles (CTMVs), cryogenic portable tanks, and multi-unit tank car tanks (“ton tanks”). The PHMSA also proposes to incorporate and authorize the use of the 2015 edition of the National Board of Boiler and Pressure Vessel Inspectors National Board Inspection Code, in our regulations as it applies to the continued service of CTMVs, cryogenic portable tanks, and ton tanks constructed to ASME Section XII standards, as well as for existing CTMVs constructed in accordance with the current hazardous materials regulations. If adopted, these amendments will allow for flexibility regarding selection of authorized packaging, in addition to qualification and maintenance for continued service of the packaging, without compromising safety.

Effective Date: The final rule will become effective on February 22, 2016. Voluntary compliance date: PHMSA is authorizing voluntary compliance beginning February 22, 2016. Delayed compliance date: Unless otherwise specified, compliance with the amendments adopted in this final rule is required beginning January 23, 2017.

49 CFR Parts 107, 171, 172, 173, 174, 176, 177, 178, and 180

Summary

As required by the Moving Ahead for Progress in the 21st Century Act (MAP-21), the Pipeline and Hazardous Materials Safety Administration is amending the Hazardous Materials Regulations to adopt provisions contained in certain widely-used or long-standing special permits that have an established safety record. The adopted amendments are intended to provide wider access to the regulatory flexibility offered in special permits and eliminate the need for numerous renewal requests. The adopted amendments will also reduce paperwork burdens and facilitate commerce while maintaining an appropriate level of safety. PHMSA conducted an extensive analysis of all active special permits and codified, as appropriate, those special permits deemed suitable in this rulemaking.

This final rule corrects editorial errors, makes minor regulatory changes and, in response to requests for clarification, improves the clarity of certain provisions in the Hazardous Materials Regulations. The intended effect of this rule is to enhance the accuracy and reduce misunderstandings of the regulations. The amendments contained in this rule are non-substantive changes and do not impose new requirements.

As required by the Moving Ahead for Progress in the 21st Century Act (MAP-21), the Pipeline and Hazardous Materials Safety Administration is proposing to amend the Hazardous Materials Regulations to adopt provisions contained in certain widely-used or long-standing special permits that have an established safety record. The proposed revisions are intended to provide wider access to the regulatory flexibility offered in special permits and eliminate the need for numerous renewal requests, thus reducing paperwork burdens and facilitating commerce while maintaining an appropriate level of safety. PHMSA conducted an extensive analysis of all active special permits and, in this rulemaking, those special permits deemed suitable are being proposed for adoption. PHMSA is inviting all interested persons to provide comments on both those special permits deemed suitable and proposed to be adopted into the HMR and those that are deemed not suitable for adoption. In addition, PHMSA is also requesting comments on a proposed requirement for special permit applicants to include regulatory text in their applications, when appropriate.

PHMSA proposes to make miscellaneous amendments to the Hazardous Materials Regulations to update and clarify certain regulatory requirements. These proposed amendments are designed to promote safer transportation practices, address petitions for rulemaking, respond to National Transportation Safety Board (NTSB) Safety Recommendations, facilitate international commerce, make editorial corrections, and simplify the regulations. The proposed provisions in this rulemaking include, but are not limited to, removing the packing group (PG) II designation for certain organic peroxides, self-reactive substances and explosives, incorporating requirements for trailers of manifolded acetylene cylinders, and providing requirements to allow for shipments of damaged wet electric batteries. In addition, this rulemaking proposes to revise the requirements for the packaging of nitric acid, testing of pressure relief devices on cargo tanks, and shipments of black or smokeless powder for small arms.

Effective Date: January 1, 2015. Voluntary compliance date: PHMSA is authorizing voluntary compliance beginning January 1, 2015. Delayed compliance date: Unless otherwise specified, compliance with the amendments adopted in this final rule is required beginning January 1, 2016. Incorporation by reference date: The incorporation by reference of certain publications listed in this rule is approved by the Director of the Federal Register as of January 1, 2015.

49 CFR Parts 171, 172, 173, 175, 176, 178 and 180

Summary

PHMSA is amending the Hazardous Materials Regulations to maintain alignment with international standards by incorporating various amendments, including changes to proper shipping names, hazard classes, packing groups, special provisions, packaging authorizations, air transport quantity limitations, and vessel stowage requirements. These revisions are necessary to harmonize the Hazardous Materials Regulations with recent changes made to the International Maritime Dangerous Goods (IMDG) Code, the International Civil Aviation Organization's Technical Instructions (ICAO TI) for the Safe Transport of Dangerous Goods by Air, the United Nations Recommendations on the Transport of Dangerous Goods (UN Model Regulations) and subsequently address three petitions for rulemaking.

PHMSA proposes to amend the Hazardous Materials Regulations to maintain alignment with international standards by incorporating various amendments, including changes to proper shipping names, hazard classes, packing groups, special provisions, packaging authorizations, air transport quantity limitations, and vessel stowage requirements. These revisions are necessary to harmonize the Hazardous Materials Regulations with recent changes made to the International Maritime Dangerous Goods Code, the International Civil Aviation Organization's Technical Instructions for the Safe Transport of Dangerous Goods by Air, the United Nations Recommendations on the Transport of Dangerous Goods—Model Regulations and subsequently address three petitions for rulemaking.

Submit comments by March 31, 2014. To the extent possible, PHMSA will consider late-filed comments as we determine whether additional rulemaking is necessary.

49 CFR Parts 171, 173, 178, and 180

Summary

PHMSA is proposing to amend the Hazardous Materials Regulations applicable to the design, construction, certification, recertification and maintenance of cargo tank motor vehicles, cryogenic portable tanks and multi-unit tank car tanks (ton tanks) in response to petitions for rulemaking from the American Society of Mechanical Engineers (ASME), the National Board of Boiler and Pressure Vessel Inspectors (National Board), and the Pressure Vessel Manufacturers Association (PVMA). Specifically, this NPRM proposes to allow the use of the 2013 edition of the ASME's Boiler and Pressure Vessel Code, Section XII (Section XII) for the design, construction, and certification of cargo tank motor vehicles, cryogenic portable tanks and ton tanks. PHMSA also proposes to authorize the use of the 2013 edition of the National Board of Boiler and Pressure Vessel Inspectors' National Board Inspection Code (NBIC), as it applies to the continuing qualification and maintenance of ASME constructed cargo tank motor vehicles, cryogenic portable tanks, and ton tanks constructed to standards in ASME's Section XII, and existing cargo tank motor vehicles and portable tanks constructed to Section VIII, Division 1. If adopted, these amendments will allow for regulatory flexibility, without compromising safety.

The comment period for the ANPRM closing on November 5, 2013 is extended until December 5, 2013. To the extent possible, PHMSA will consider late-filed comments during the next stage of the rulemaking process.

49 CFR Parts 173, 174, 178, 179, and 180

Summary

PHMSA is notifying the public of our intent to extend the comment period by 30 days for a notice of proposed rulemaking published on September 6, 2013.

Effective date: October 1, 2013. The incorporation by reference of certain publications listed in the rule was approved by the Director of the Federal Register as of January 7, 2013.

49 CFR Parts 107, 130, 171, 172, 173, 174, 177, 178, 179, and 180

Summary

This final rule corrects editorial errors, makes minor regulatory changes and, in response to requests for clarification, improves the clarity of certain provisions in the Hazardous Materials Regulations (HMR). The intended effect of this rule is to enhance the accuracy and reduce misunderstandings of the regulations. The amendments contained in this rule are non-substantive changes and do not impose new requirements.

PHMSA is considering revisions to the Hazardous Materials Regulations (HMR) to improve the regulations applicable to the transportation of hazardous materials by rail. The revisions are based on eight petitions received from the regulated community and four National Transportation Safety Board (NTSB) Recommendations which are referenced by a petition. In this ANPRM, we outline the petitions and NTSB recommendations, identify a preliminary estimate of costs and benefits from the petitions, pose several questions, and solicit comments and data from the public. Under Executive Order 13563, Federal agencies were asked to periodically review existing regulations. The questions posed in this ANPRM and responses by commenters will be used in conjunction with a retrospective review of existing requirements aimed to modify, streamline, expand, or repeal existing rules that are outmoded, ineffective, insufficient, or excessively burdensome.

Effective Date: This rule is effective May 10, 2013. Voluntary Compliance Date: Voluntary compliance with all amendments is authorized March 11, 2013.

49 CFR Parts 105, 171, 172, 173, 177, 178, and 180

Summary

PHMSA is amending the Hazardous Materials Regulations (HMR) to make miscellaneous amendments to update and clarify certain regulatory requirements. These amendments promote safer transportation practices, eliminate unnecessary regulatory requirements, address a petition for rulemaking, incorporate a special permit into the HMR, facilitate international commerce, and simplify the regulations. These amendments also update various entries in the Hazardous Materials Table (HMT) and corresponding special provisions, clarify the lab pack requirements for temperature-controlled materials, and require hazmat employers to make hazmat employee training records available upon request to an authorized official of the Department of Transportation (DOT) or an entity explicitly granted authority to enforce the HMR.

Effective date: July 25, 2012. Voluntary compliance date: PHMSA is authorizing voluntary compliance beginning June 25, 2012. Incorporation by reference date: The incorporation by reference of certain publications listed in this rule was previously approved by the Director of the Federal Register on October 1, 2003 and March 16, 2009.

49 CFR Parts 171, 172, 173, 174, 179, and 180

Summary

The Pipeline and Hazardous Materials Safety Administration is amending the Hazardous Materials Regulations to incorporate provisions contained in certain widely used or longstanding rail special permits that have general applicability and established safety records. Special permits allow a company or an individual to package or ship a hazardous material in a manner that varies from the regulations provided an equivalent level of safety is maintained. Incorporating the special permits discussed in this rulemaking will provide users of the regulations with wider access to the regulatory flexibility offered in these special permits, eliminate the need for numerous renewal requests, reduce paperwork burdens, and facilitate commerce while maintaining an appropriate level of safety. This rulemaking will also respond to two petitions for rulemaking, P-1497, concerning the use of electronic shipping papers, and P-1567, concerning the removal of the Association of American Railroad's AAR-600 portable tank program for previously adopted standards that meet or exceed the AAR-600 requirements.

The Pipeline and Hazardous Materials Safety Administration (PHMSA) is considering amendments to the Hazardous Materials Regulations (HMR) to revise certain requirements applicable to the manufacture, use, and requalification of DOT specification cylinders. PHMSA is taking this action in response to petitions for rulemaking submitted by the regulated community and a review of the regulations applicable to compressed gas cylinders. PHMSA is not proposing specific amendments to the HMR; rather, we are seeking comment on the issues discussed in the ANPRM. While this ANPRM focuses on specific petitions for rulemaking and special permits, we will accept comments on the HMR applicable to compressed gas cylinders. These comments will be combined with a retrospective review of existing requirements aimed to modify, streamline, expand, or repeal existing rules that are outmoded, ineffective, insufficient, or excessively burdensome.

In response to petitions for rulemaking submitted by the regulated community, PHMSA proposes to amend the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) to update, clarify, or provide relief from miscellaneous regulatory requirements. Specifically, PHMSA is proposing to amend the recordkeeping and package marking requirements for third-party labs and manufacturers to assure the traceability of packaging; clarify an acceptable range in specifications for resins used in the manufacture of plastic drums and Intermediate Bulk Containers (IBCs); remove the listing for “Gasohol, gasoline mixed with ethyl alcohol, with not more than 10% alcohol, NA1203”; harmonize internationally and provide a limited quantity exception for Division 4.1, Self-reactive solids and Self-reactive liquids Types B through F; allow smokeless powder classified as a Division 1.4C material to be reclassified as a Division 4.1 material to relax the regulatory requirements for these materials without compromising safety; and provide greater flexibility by allowing the Dangerous Cargo Manifest to be in locations designated by the master of the vessel besides “on or near the vessel's bridge” while the vessel is in a United States port.

PHMSA proposes to make miscellaneous amendments to the Hazardous Materials Regulations to update and clarify certain regulatory requirements. These proposed amendments are designed to promote safer transportation practices; eliminate unnecessary regulatory requirements; address a petition for rulemaking; incorporate a special permit into the Hazardous Materials Regulations; facilitate international commerce; and simplify the regulations. Among other provisions, PHMSA is proposing to update various entries in the Hazardous Materials Table and corresponding special provisions, clarify the lab pack requirements for temperature-controlled materials, and revise the training requirements to require that a hazardous material employer must make hazardous materials employee training records available upon request to an authorized official of the Department of Transportation (DOT) or the Department of Homeland Security (DHS).